1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Nata [24]
2 years ago
8

The equation y=x^2-12x+45 models the number of books y sold in a bookstore x days after an award-winning author appeared at an a

utograph-signing reception.
How many books were sold at the autograph session?

What is the minimum nunber of books sold?

What day did that occur?

How many books were sold on day fifteen?​
Mathematics
2 answers:
choli [55]2 years ago
7 0

Answer:

3.2

Step-by-step explanation:

xz_007 [3.2K]2 years ago
3 0

Answer:

Answer: The first day the author reaches 100 days is on day 16.

To solve this problem, you could use a graphing calculator to graph the given equation. Then, determine when this line crosses 100. It crosses when x = 15.539. Therefore, we would have to round up to 16 so it is at least 100.

You could use the quadratic equation to solve: 100 = x^2 -12x + 45

Either you will get 16. If you use the quadratic formula, make sure to only use the positive answer.

You might be interested in
Tiana has $70 in an account. The interest rate is 5% compounded annually.
Alekssandra [29.7K]

Answer:

73 dollars and 50 cents

Step-by-step explanation:

Initial Deposit:

70

Years to Save:

1

Estimated Rate of Return

5

Compound Frequency:

Annually

Earned Interest

$3.50

Total Balance

$73.50

Hope this helps!

8 0
1 year ago
The perimeter of a rectangle can be found using the expression 2ℓ + 2w, where ℓ represents the length and w represents the width
irakobra [83]

Answer:

18

Step-by-step explanation:

2(6) + 2(3)

12 + 6 = 18

8 0
2 years ago
Which choice is equivalent to the expression below ? sqrt -12
STALIN [3.7K]
There’s no answer choices
6 0
3 years ago
Read 2 more answers
The ratio of two numbers is 1:4, and the sum of these numbers is 40. Find the numbers
Irina-Kira [14]
X + 4x = 40

5x = 40

5x/5 = 40/5

x = 8


1x 8 = 8

4x 8 = 32

Check=

8 + 32 = 40

The numbers are 8 and 32
3 0
2 years ago
Snack in our class occurs at 9:50 am. We eat lunch at 12:05 pm. How long to students need to wait
Novay_Z [31]

Answer:

2 hours and 15 minutes

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • This question consists of 2 parts, a and b.
    8·1 answer
  • Find the sum of the finite sequence: 4, 2, 0, -2, - 4.<br> A12<br> B0<br> C1<br> D4.
    11·1 answer
  • Write 2 mixed numbers where the lcd is 12,but the product of the denominators is not 12
    5·1 answer
  • Josh got to school at half past 8
    14·1 answer
  • At the Beltway Outlet store , you buy x computer games for $13 each and a magazine for $4. Write an expression in simplest form
    14·1 answer
  • Factor x^3-x^2-17x+15
    7·1 answer
  • Which of the following point-slope form equations could be produced with the points (4, 5) and (-3, -5)?
    13·1 answer
  • The perimeter of a square is 7.2 meters how long is each side ?
    5·2 answers
  • -15+-18<br>plz help me<br>plz explain​
    9·1 answer
  • 45/56 divided by (-.15)
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!